Socket-fastener.



' E. L. MILLE ,OQMJT FASTEN APPLICATION FILED JUL! Patented May 25, 1909.

V UNITED satires Parana marina.

I E IN L. nlLLnajor TEBBE HAUlE, INDIANA.

sooxnr-res'rnnnza.

No. sea-see.

Specification oi Letters Patent.

4 Patented May 25, 1909.

' application flied July 27 1908. Serial No. 445,506.

i that kind which. can be readily o eratod to 'so engage the shank of a tool that atcral and longitudinal movemcntiof the same will he impossible.

A further-object is to provide ai device ;which will be simple in construction, em

hodying but few working parts, and compar atively inexpensi've to manufacture, and

WlHGh may be readily operated to disengage the shank of a tool.

With theseand'other objects in View, as

will'morefully hereinafter appear, the res cnt inventlon conslstsjln certaln nove details of construction and arrangement of parts hereinafter fully described,'illustrated in the accompanying drawings, and more particularly pointed out in the appended claims; itl-being understood that various changes in the form, proportion, size and minor details of the device may be made, without departing from the spirit or sacrifi'cing any ofthc advantages of the invention.

In the accompanyingdrawings forming apart of thisspecifi cationp Figure 1 is a longitudinal sectional view of the device showing the parts in position to disengage the shank Fig. 2 is a sectional plan view taken on line I 2-2 of Fig. 1.

' The sockctiscentra longitudinal box-c extending from the head Similar numerals of reference are employed to designate corresponding parts throughout.

In the construction illustrated body 1, of the chuck is, cylindrical and. centrally provided at one end with the usual extending stem 2. The socket 1 is reduced in diamotor from the stem endto a point approximately intermediate its horizontal center and op osite end thereby formingan enlarged liead 3, the outer edge of which is provided with a circumferential flange 4, the

function of which will aplpcar latir. 1 1

y rov or 'Wlt 1 a end 3 to a point adjacent the opposite end and further provided adjacent its horizontal center with an opening 5,, extcnding from the surface of the chuck and terminating in the longitudinal bore; this opening 5 is rcduced in diameter at-its inner end so as to provide a shoulder, which forms a stop for the head 6, of a bolt7, the latter is greater in length than the o ening5,'so that when the head 6 en, ages t e shoulder, the inner terminal of t e bolt will project into the bore, while the outer end will be flush with the outer face of the chuck. A. threaded opening 8 is formed in the socket adjacent the stem end; this opening extends inwardly,.

similar to the opening 5', and terminates in the bore and at the inner end thereof a suitable screw 9 is threaded into said opening, theinner terminal of which isflat and projects into the bore, while the outer terminal is flush with the'outer face of the chuck.

lhe shanks 10 of the bit or drill to be used,

is'ol a size to enter the bore of the socket,.

and is rovided with a transverse recess 11, in whic 1 fits the inner terminal of the bolt 7 when the end of the shank abuts the end of the bore, or as when the parts are in position, as illustrated in Fig. 1; thus it will be seen that longitudinal movement of the bit will be prevented, and in order toprevent the bit from turning while so held, the end of the shank thereof is stepped as shown at 12, and this stepped ortion 15 adapted to receive the terminal of t e screw 9 when the parts'are in position as shov n in Fig. 1. seen that l have rovided. a device which will positively l'lOlL a bolt against longitu dinal movement without the aid of the usual tightening jaws with which considerable difficulty is experienced in disengaging the hits. In order that the parts may be held in the position as described a suitable sleeve is em ployed and adapted to operate on the outer face of the chuck; In the present instance,

Thus it can be a the length of this member is shown to be substantially the same as the length of the reduced portion of the socket, and its inner ,face is. so constructed, that at the end ad jacent the head 3, the interior diameter is 'sufiicicnt to permit the sleeve to slide longitudinally on the head. This enlarged interior diameter extends toward the end of the sleeve for a distance, approximately equal to the length of the head, where it terminates in an inwardly inclined shoulder 13, which extends approximately to the hor1- e2e,eee

mental center of the sleeve; the renmi der .1. in :i chuck, the coinbinidien o? a t being of a diameter sufficient to slidingiy iit on the reduced portion 1 of the chuck.

With this construction, it is obvious that when the enlerged'interior of the sleeve is moved toward the reduced portion 1 until the shoulder 13 clears the opening 5, the head 1 6 of the bolt Wlll move into the opening formed by the lnner face of the sleeve and outerfece of the chuck; and the shank 10 may be inserted into or Withdrawn from the bore by now moving the sleeve in the opposite direction theshoulder 3 will engage the; head oi the bolt and force the end of letter i into the here. In order to secure the sleeve in position to hold the bolt in engagement with the shank, a circumferential groove 14 is formed in the head 3 adjacent the reduced portion 1. This groove designed to form a. seat for :1 spring 15, which is preferably formed of H. single piece of spring Wire bent to the shape oi" the head 3; Thus it will be seen that when the parts are in position as illustrated in Figs. 1 and 2, the tendency of the spring will be to straighten and this will cause the latter to bind against the face of the sleeve, thereby holding the latter in adjusted osition.

The ongitudinal movement of the sleeve is limited by the flange 4, 5ione end of the socket, and by e pin 16, adjacent the opposite end, as iliustrated in 1 I claim: I

terminating at one end. in an em: a transversely disposed loci; bolt s.i .liii giy 'tted in said socket, a slide sleeve encircling said socket interiorlyprovided with a beveled face to engage said bolt, and en oxpnnsiblo ring interposed between the surfaces of said socket and sleeve and adapted to frictionelly 5 beer on the inner face of said sleeve to hold 1 the beveled face of the letter in and out 01 i engagement with said bolt.

2. In a chuck a socket member having an enlargement at one end constituting a head. i e radially extending lock bolt slidebly mounted within the socket m cniber, an exf pnnsible ring seated in the head oi" the sookci member, sleeve slidebly mounted on said socket member and provided Jvith' an interior beveled face, said face being movable into frictional engagement with the lock boil and said ring frictionally engaging the inner face of the sleeve to hold said sleeve eiiheein or out of engagement with the bolt, and means adjacent the ends of the socket inc nberfor limiting the sliding movement of the sleeve.

In testimony that i Ciitilll the foregoing as my own, I have hereto affixed my signature in the presence of two witnesses.

EDWEN L. MELLER. ii itnosses Y B. STIMSON,

F. MsBUonmonAm. 

